The heavy snowfall may have caused a huge section of a roof to collapse at a popular banquet hall in Des Plaines. A hole in the ceiling at Café la Cave measure about 30 feet by 50 feet. The collapse happened just before 1 a.m. today. Fortunately, no one was there at the time. The collapse sheared off a pipe from the sprinkler system, sending water into the building. The city`s building and engineering departments are now working with the banquet hall’s owners to determine if other parts of the building are safe.